01 - Place frozen banana slices, milk, unsweetened cocoa powder, creamy peanut butter, maple syrup or honey, vanilla extract, and a pinch of salt into the blender.
02 - Blend on high speed for 30 to 60 seconds until the mixture is completely smooth and creamy.
03 - Taste the mixture and add additional sweetener if desired, blending briefly to incorporate.
04 - Divide the smoothie evenly between two glasses.
05 - Garnish each glass with optional toppings such as whipped cream, chocolate shavings, or crushed peanuts. Serve immediately.